In a world where corporations snuff out the competition by sending fighter jets to attack their offices, teenage pilot Kannami Yuichi is reassigned to a new base. There, he meets Tokino, a carefree pilot who enjoys the company of older women, and Kasanagi Suito, his superior officer who he slowly falls for. However, not everything is as it seems. Soon, distressing questions are raised about Kannami's predecessor, a race of perpetual adolescents known as the Kildren, and the enemy ace of the skies, Teacher.